CN201220547Y - Compass - Google Patents

Compass Download PDF

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Publication number
CN201220547Y
CN201220547Y CNU200820023223XU CN200820023223U CN201220547Y CN 201220547 Y CN201220547 Y CN 201220547Y CN U200820023223X U CNU200820023223X U CN U200820023223XU CN 200820023223 U CN200820023223 U CN 200820023223U CN 201220547 Y CN201220547 Y CN 201220547Y
Authority
CN
China
Prior art keywords
compass
utility
model
fixing feet
compasses
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CNU200820023223XU
Other languages
Chinese (zh)
Inventor
赵庆丽
Original Assignee
赵庆丽
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 赵庆丽 filed Critical 赵庆丽
Priority to CNU200820023223XU priority Critical patent/CN201220547Y/en
Application granted granted Critical
Publication of CN201220547Y publication Critical patent/CN201220547Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a teaching aid, particularly a compass. The compass comprises a fixing leg and a rotating leg, and is characterized in that a sucker is arranged at the end of the fixing leg. The utility model has the beneficial effect that the compass has a simple structure, is used conveniently and solves the problem that the fixing leg is easy to slide when the compass is used for drawing a circle.

Description

A kind of compasses
(1) technical field
The utility model relates to a kind of teaching aid, particularly a kind of compasses.
(2) background technology
The demonstration compasses that teaching is at present used, aciculiform structure that compass foot is an iron normally, another pin is the fixing feet that is used for fixing chalk, usually because blackboard is more smooth than handing over, the aciculiform pin of compasses is not easy to fix, in drawing the circle process, also skid easily, cause drawn figure to lose shape or be out of shape.
(3) summary of the invention
The utility model provides a kind of compasses easy to use in order to remedy the deficiencies in the prior art.
The utility model is achieved by the following technical solution:
A kind of compasses comprise fixing feet, rotate pin, and it is characterized in that: the end of described fixing feet has sucker.
The more excellent technical scheme of the utility model is: described fixing feet is telescopic, and described rotation pin is telescopic.
The beneficial effects of the utility model: effectively solved compasses drawing bowlder fixing feet problem of slip, simple in structure, easy to use.
(4) description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Accompanying drawing is a structural representation of the present utility model.
Among the figure, 1 fixing feet, 2 suckers, 3 rotate pin.
(5) specific embodiment
Accompanying drawing is a kind of specific embodiment of the present utility model.This embodiment comprises fixing feet 1, rotates pin 3, and the end of fixing feet 1 has sucker 2.Fixing feet 1 is telescopic, and it is telescopic rotating pin 3.The existence of sucker 2 has effectively solved compasses problem of slip when the blackboard upper drawing circle, sucker 2 can be fixed on the blackboard firmly, guaranteed fixing feet 1 inertia, the figure that draws so just can guarantee it is just round, two pin of compasses are telescopic, can adjust the length of two pin as required, the circle diagram case of draw different sizes and shape.

Claims (2)

1. compasses comprise fixing feet (1), rotate pin (3), and it is characterized in that: the end of described fixing feet (1) has sucker (2).
2. compasses according to claim 1 is characterized in that: described fixing feet (1) is for telescopic, and described rotation pin (3) is telescopic.
CNU200820023223XU 2008-05-27 2008-05-27 Compass Expired - Fee Related CN201220547Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU200820023223XU CN201220547Y (en) 2008-05-27 2008-05-27 Compass

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU200820023223XU CN201220547Y (en) 2008-05-27 2008-05-27 Compass

Publications (1)

Publication Number Publication Date
CN201220547Y true CN201220547Y (en) 2009-04-15

Family

ID=40574065

Family Applications (1)

Application Number Title Priority Date Filing Date
CNU200820023223XU Expired - Fee Related CN201220547Y (en) 2008-05-27 2008-05-27 Compass

Country Status (1)

Country Link
CN (1) CN201220547Y (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102950941A (en) * 2012-11-20 2013-03-06 无锡商业职业技术学院 Compasses for whiteboard teaching

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102950941A (en) * 2012-11-20 2013-03-06 无锡商业职业技术学院 Compasses for whiteboard teaching

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20090415

Termination date: 20100527